Typewriting machine



Nv. 22, 1932. J. H. RAND. JR

TYPEWRITING MACHINE Filed Jan. 13, 1952 2 Sheets-Sheet INVENTOR ATTORNEYNov. 22, 1932. J. H. RAND, JR

TYPEWRITING MACHINE Filed Jan. 18, 1982v 2 Sheets-Sheet INVENTOR wm @wPatented Nov. 22, 1932 UNITED STATES PATENT OFFICE JAMES H. RAND, J R.,OF BUFFALO, NEW YORK, ASSIGNOR T0 REMINGTON TYPEWRITER p COMPANY, OFILION,A NEW YORK, A CORPORATION 0F NEW YORK TY PEWRITING MACHINEApplication led January 13, 1932. Serial No. 586,348.

My invention relates to typewriting4 ma-v This is due to the fact'thatin operating aA noiseless machine the operator hears no noise, and thetouch on such machines isA usually much lighter than in noisy machines.Therefore, the operator` has the mental attitude that she is not writingor obtaining any result from the operation of the keys, or that she isnot attaining her usual speed, due almost wholly to the entire absenceof the usual clatter to which she is accustomed. It is difficult in someinstances to overcome this pure- 1y mental attitude, or to convince theoperator that she is in fact writing at possibly an even greater speedthan she ordinarily attains on a noisy machine, and with the expenditureof less effort.

One of thev main objects of my invention is to overcome thesedifficulties and to provide means whereby a noiseless machine may bereadily converted at will into a noisy machine,

or one that simulates the noise produced by the hammer-blows of thetypes in such machines. This is preferably accomplished without in anymanner modifying the pressure-imprint or touch of the noiseless machine.

I also provide in some instances means whereby the tone-effect or degreeof noise produced may be modified, either increased or decreased, atwill.

By these means the noiseless machine may be so regulatedfor the timebeing as to cause it to give forth the noise an .operator having themental attitude referred to above is used to, and thus to exclude fromher mind dissatisfaction she would otherwise have with the machine. Byoccasionally eliminating 50 noise, or gradually reducing it, theoperator will eventually overcome the mental attitude mentioned above,and as soon as that is overcome she will accept the noiseless feature ofthe machine with enthusiasm.

The devices of my invention may be employed only in machines used indemonstration of noiseless machines, or all noiseless machines may beequipped with them, since the expense in providing such devices isinsignificant.

An advantage of the present invention 4is that the devices thereof arein the nature of attachments that may be readily embodied m noiselessmachines without modifying or materially modifying the existingstructural features thereof.

To the above and other ends which will hereinafter appear' my inventionconsists in the features of construction, arrangements of parts andcombinations of devices set forth inthe following description andparticularly pomted out in the appended claims.

In the accompanying drawings whereinlike reference characters indicatecorresponding parts 1n the different views:

Fig. 1 is a fragmentary, skeletonized, vertical, fore-an'd-aft sectionalview of a sufiicient number of parts of one form of a typewritingmachine to illustrate my invention in its embodiment therein.

.F1g. 2 is a detail, fragmentary, sectional view of apart of the sametaken on the line 2 2 of Fig. 4 and seemin the direction denoted by thearrows at .s'aid line.

Fig. 3 is a fragmentary, sectional view of a modified form ofconstruction, the section being taken on the linev3-3 of Fig. 5 and seenin the direction denoted by the arrows at said Fig. 4: is a detail,fragmentary, horizontal, sectional view o f a portion of the machineillustrated in Fig. 1.

Fig. 5 is a view that corresponds to Fig. 4 but shows a modified form ofsounding device and illustrates the invention embodied in a portablemachine.

Fig. 6 is a detail, perspective view of the sounding device illustratedin Figs. 3 and 5.

The devices of my invention are shown embodied in the present'instancein a noiseless 10 typevvriting machinefsimilar to that disclosed `in theapplication of George G. Going,'Serial .machine While my invention maybe readily embodied in such machines Without modichine.

'fying, or materially modifying, the existing structural .featuresthereof, .it should be un'- derstood that the invention. isnotrestricted in its use to such machines, but maybe -employed with.almost equal facility in other noiseless 'typevvriting machines suchforexample as the Nor-6 'Remington noiseless ma- Referring' more'particularly' to Fig.l 1 a vvill be seen 4that each type actionincludes a type bar Al0 pivoted'at'm to aty e bar seg ment 12; e heel:of eachtype ar is providedvvith an 'engaging projection 13 seated` inan.opening14irl-actuating'link 15. Each 'link 15 is. pivoted at 16v toan angular sublever 17 "which inv turn ispivoted at 1 8'1on a' hanger19'detachably secured to a" supporting plate 20. A'.- link 2,1'connects-'each angular sub-lever 17 with its companion 'key lever 22' Irovided with affinger key .23.v The 'key being guided by -front and rearguida-{Sombs 26 and'27'respectively'.

Each type' bar ,is connected to toggle ,link-'j .A age that-is set inmotionbytheassociated type' bar and controls its movement to slovv4 up'the. vtype bar at the last part of its printingstroke and produce .anoiseless pressure-imprint ,as

distinguishedfrom -a hammer-blowiproduced.

" by a typebar in' a noisy machine.

' accumulator 37 is cnnejcted toor formspart of each link'36, and'exerts its farce straighten 'I hus, there is pivoted toeach type-"barat 28 a toggle link 29 which in'turn is .pivcted at 30 vto itscompaniontoggle link- 3l. Theto'g- Agie-links 31 are anchored at 32, toafixed part 33 ofthe frame. Eachlink 31 has a'laterallyextendingprojection 34 to-.Whichthere is piv-.`

o ted at 35 a' linkormember Sdof asecond V toggle. A-.weightedmember' ormomentum' thev toggle 29,31. :Eachf link 36'5is pivotedat 38' touts.-companion 'toggle link 39 which is -p1's'1oted'at'40 to' the ytypebar-segment.

Each link 39 is provided withaproje'ction 4 2 the segment 12, .the"companionprojction 42 reaching-the bu'fer'plate atl or about theinstant that the type on the .actuatedtype barv reaches theplaten 44 andeffects a-.gnoiseless carried 'by the platen.y

- George G; Going, Ser'. No. 363,75

is actuated 'ateach' printing operation may A g shown-v inv this view.'A' corresponding movecen'- ti'actilereturning-Spring 41v'f'orjea'ch typea.c. 4tion 1s connectedat-oneend to its companion link 15 land isanchored atthe'otherlend'to thetassociatedhanger.19.7v The force -oeach. sprlng 41 Ais exertedto return" all parts ofthe associated vtype jaction to n0rmal' positi0n.

the platen.l

'A'v universal. bar 45 'actuated "by each type bar to. control theescapement mecha'- nism, whereas a. second universalbar 46 un- A derliesall of the key levers 22 and is'actu-` Iated thereby. The seconduniversal bar 46 is'carried by' arms 47- fixed to 'a 'rockshaft "4 8pivoted atits ends'on pivot screws threadi ed into the side plates 49 ofthe machine frame'.- The universal bar 46 is emplo ed in this machine toactuate the ribbon vi rater and .ribbon fe'edmechanism', not shown, but

which are disclosed in 'the apgica'tion' of filed May 17, 1929. .Thus,an upright arm 50 i-s fixed .to therock shaft'48 and is' pivoted at 51to 'a 'link 52 by which .the ribbon feedjmecha.-

nis'm (notfsh'o'wn)'is',actuated. f A similararm 53 is'iixed 'to .therock lshaft-.'48 'and is pivoted toi a second link 54h 'which-theribb`on"vibratorf (not Shown) 1s actuated. A contractile return, spring551 is connectedA at .neend tothe arm 53' andgi's anchored at its 4other`endfto a plate 56.11 This` spring returns .rtlierock shaft 48 -and theparts connected #therewith to normal position when '.a deau presed4printing key .is -releasedbytheoperf ator and` returns ltoner-malposition."

, Since th`s fsecondunlversal Iliar 4'6isactuatevers 22 are pl'votedl onplv'ot W1res'24 and 25,

ed at each operation'ofa type' action andl is conveniently located-forthe purpose If avail -fmyseliof 'it to ,actuate the sounding4 device ofmy present invention at'e'achprinting op--l eration. It shouldbeunderstood, hawever that any-suitable part of .the machine that beemployed to operate the soundingdevice.l

In 'the present instanceI detachably aiX-an Aarm*57,toftl1e universalbar 4G by.screws.58.. -The'lower free' end ofthe arm 5,7 vcarries a-harnnlerfhead .59 that is'ada'pted to.-'stril'{e` a' 4soundingfdevicevor. sounding',l'xiardj 60 .'(when the latter isi-in thepath-thereof) ateach :actuationof-a printing key .'23, -andthus r'oducea. noise'thatsimulates the' hammer.

down to the 'full frmthe dotted line psition.

mentis transmitted 'tof the "arm 57' andthe ,hammerfhead 59, causin' thelatteil .to impact 1 4with the' soundingfdevice. 6 0 at aliut theagainst the platen, thereby simulating the.-

soundt-that is 'ordinarily. producedin the`f hammerblovv"machineby etypes'fstriking "In the"constructin shoyviifin 1 to g4 ,inclusive the[sounding-board 6Qfis made of, wood and is fixedfby screws 6-1.'tofasupporting'arm, 62. ,Infgthis No.f Remington constructionfthemachine is; not' fixed 'on'a base board, 'asisthe case intheportablemachine o r -N.0 7X Remington jrnachine? shown in.

Figs. 3, 5 and 6, but is supported on feet 63 like the usual standardoflice machine.

pair of the feet 63 on each side of the machine is attached in thepresent instance to a strip 64 of resilient metal, and each strip 64 isattached by headed screws 65 to the frame of the machine. Thus, the stemof each screw 65 passes through the associated strip 64 and anintermediate washer 66 and then vtakes into a tapped opening in abracket 67 secured to a side plate 49 of the machine. This springsupported mounting for the machine was not invented by me. In this formof the construction I prefer to pivot the supporting arm 62, asindicated, by screw bolt 68, on one of the resilient strips 64. A springfriction washer 68 is interposed between the arm 62 and head of the boltto hold the arm 62in the position to which it may be adjusted around itspivot 68. The arm 62 extends beyond one side of the machine (and theouter shell 69 thereof) where the arm is provided with a finger piece70. With the aid of this linger .piece the arm may be moved from thefull to the dotted line position shown in Fig. 4, and vice versa, thusmoving at will the sounding device or board 60into and out of the pathof the hammer 59, thereby rendering the sounding device effective orine'ective at will.

In Figs. 3, 5 and 6 I have shown a modified form of construction inwhich a metal arm or sounding device 7l is apertured at 718L tov receivea wood screw 72 threaded into the base board 73 to which the machine isattached in the usual manner. -A spring friction washer 72a isinterposed .between the member 71 and the base board `to hold saidmember against accidental displacement from any position to which it maybe adjusted around its pivot. The arm or member 7l extends beyond oneside 'of the machine and terminates vin a finger piece 74 by which saiddevice may be shifted or adjusted at will to any of the three positionsindicated `in Fig. 5. A second metal arm 75 of considerably lessthickness than the arm 71 isfixedly secured to the latter by spotwelding, or in any other suitable manner, to radiate from the pivotalcenter thereof. It will be understood from a consideration of Fig. 5that when the operator adjusts the member 71, 7 5 to the full lineposition, the inner end of the arm 71 will be brought into thepath ofthe hammer-head 59 and will give forth one tone or characterof noise atcac-h actuation of a printing key; such noise closely simulating thehammer-'blow of a type bar `in an ordinary noisy machine. IVhen,however, the finger piece 74 is shifted to the left from the full lineposition, shown in this figure, the thinner arm 75 will be brought intothe path of the hammer 59, thereby giving forth a different tone ordecidedly reduced extent of noise at each printing operation, but

nevertheless simulating the hammer-blow of a type bar in anoisy machine.When the linger piece 74 is moved to the. right-hand position shown inFig. 5, both arms 7l and 75 will be carried out .of the path of thehammer-head 59, thereby rendering the sounding device ineffective andthe machine noiseless.

While I have described in detail two forms of sounding devices, itshould be understood that within the broad aspects of my invention anysuitable sounding means of the general character indicated, and for thepurposes specified, may be employed in any character of noiselessmachine to be rendered operative or inoperative'at will. It will b'eunderstood, therefore, that various changes may be made inthe'construction, and parts thereof may be employed without others,without departing from any invention as it is defined in theaccompanying claims.

What I claim as new and desire to secure by Letters Patent is:

l. In a noiseless typewriting machine, the combination of a type-actionincluding means for effecting substantially a noiselesspressure-imprint, noise-producing means operating at each actuation ofsaid type-action for simulating the noise produced in a hammer-blowtypewriting machine, and means for at will rendering said noiseproducingmeans effective or ineffective.

2. In a noiseless typewriting machine, the combination of a type-actionincluding means for effecting substantially a noiselesspressure-imprint, noise-producing means operating at each actuationofsaid type-action for simulating the noise produced in a hammer-blowtypewriting machine, and means for at will rendering saidnoise-producing means effcctiveor ineffective without in any mannermodifying the operation and printing' effect of said type action.

3. In a noiseless typewriting machine, the combination of a plurality oftype-actions each including meansfor effecting substantially a noiselesspressure-imprint, an actuating member operated at each actuation of anyof said type-actions, a hammer controlled by said actuating member, asounding device with which said hammer coacts, and means operable atwill for rendering said hammer effective or ineective on said soundingdevice.

4. In a noiseless typewriting machine, the combination of a type-actionincluding means for effecting substantially a noiselesspressure-imprint, noise-producing means op'- erating at each actuationof said type-action for simulating the noise produced in a hammer-blowtypewriting machine, said noiseproducing means including means by whichthe tone or degree of'. noise may be varied without modifying theoperation of the typeaction, and means for at will rendering said lloslanyof said type1ac'tions, a hammer controlled bysaid actuatingmember, avsounding 'device with which said hammer" coacts, and hand'- controlledmeans operableatwill for mov.- ing said sounding device into and outofthe such positions.

'path of saidv hammer and for maintaining the sounding deviceindefinitely in either-0f 16. Ina noiseless typewriting" machine, the

`combination of .ja plurality "of type-actions each including'means lforeffecting substantially a noiseless, pressureimprint,.an actu'--atingmember-operated at each actuation of 4 an-y. of said type-actions,a hammer controlled by. saidactuating member, a sounding device withwhich. said hammer coacts,-said sound.-

ing device having means for giving forth. different tones ordegrees ofnoise from the -blow of thehammer-depending on. the posi:

tion of saidjdevice relatively t0 the hammer, and handcontrolled means:operable at .will

for shifting s aid sounding device' relatively to said -hammerand formaintaininglit in- 4 definitely' in any of said shifted'jpositions,

whereby the sounding device may be ad-` 35 justed to afford differentsounds or degreesy of noise ormay be thrown out of the path of thehammer and rendered inoperative.

7. In-a noiseless typewriting machine, the combination ofafpluralityoftypef'actions' each including-means for eii'ectingsubstan-v tiallyanoiseless pressure-imprint, a hammer l' actuated .atl each operation vof'any ofy saidtype-actions, and asounding board mounted for movement'into and out of the path of saidl l of the path of said hammer.

l vtrolled thereby for effe'ctil'ig substantially a hammer. `AIn anoiseless typewritingmachine,the'.- combination of a plurality .of'type-actions each including means for effecting substantially anoiseless pressureLimprint, a hammer actuated at each operation' of'any-of`said type-actions, and a-'sounding d-evice'having nessesto-producediiferent tonesor degrees means for'mountingfsai-d Soundingdevice for shifting movement to bring .eitherofsai'ddifferent portions.15h-@raffina the path 'of the;

machine, the I with which said hammer coacts, andmeans for shifting saidsounding 10. In a noiseless typewritin trolled'thereby foreiectingsubstantially a noisele'ss pressure-imprint, a universalbar actuatedbysaid key-levers, a hammer carried by said universal bar, a soundingdevice constructed to give-forth differenti tones or ldevice into 'and Youtof the path of said'. hammer. A machine, the combination of aplurality 0 type-actions 7o each including a key-lever, and meanscondegrees of noise depending on its efective pol sition` relatively tosaid hammer, and handvcontrolled means Afor adjusting said `sound-l Iingl device relatively to said hammer't'o'vary the effective position ofsaid deviceandadjustfit into'and out of. -the-path'of said' haml signednf'nuifninin the county (if-Erin nd f- .State of New York this thday ofJanuary,

. JAMEs 'HQ RANnJnL Y 'fil-65 A .different portions thereof of differentthickof noise when struck'bv 4said hammer, and] n hammer or-'tomove'saidsounding device out l 9.' Ina noiseless typewriting machine,lcombination of a plurality .of4 type-actions each including akey-lever'jandfmeans .coh-

noise'le'ss pressure4 imprint, a universal [bar actuated by saidkey-levers, va .hammer c'a-rf '65 ried by-said universal. bar, `asounding device

